A.3. Distribution Dynamics 299 Appendix B. Data 301 References 303

Contents Abstract Keywords 1. Introduction 2. Preliminaries and stylized facts 3. Theoretical models 4. F r o m theory to empirical analysis 4.1. The neoclassical model: one capital good, exogenous technical progress 4.2. The neoclassical model: multiple capital goods 4.3. Endogenous growth: asymptotically linear technology 4.4. Nonconvexities and poverty traps 4.5. Endogenous growth: R&D and endogenous technical progress 4.6. Growth with crosscountry interactions 5. Empirical techniques 5.1. Cross-section regression:/~-convergence 5.2. Augmented cross-section regression 5.3. Panel-data analysis 5.4. Time series: unit roots and cointegration 5.5. Clustering and classification 5.6. Distribution dynamics 6. Conclusion Appendix A. Proofs and additional discussions A. 1. Single capital good, exogenous technical progress A.2. Endogenous growth: asymptotically linear technology Temple provided valuable comments. Kim-Sau Chung provided outstanding research assistance. The word "empiric" has, in Webster's Unabridged Dictionary, two definitions: first, "that depending upon the observation of phenomena"; second, "an ignorant and unlicensed pretender; a quack; a charlatan". We have chosen, nevertheless, to use the word in the title as we think it conveys the appropriate meaning. Abstract We provide an overview of recent empirical research on patterns of crosscountry growth. The new empirical regularities considered differ from earlier ones, e.g., the well-known Kaldor stylized facts. The new research no longer makes production function accounting a central part of the analysis. Instead, attention shifts more directly to questions like, Why do some countries grow faster than others? It is this changed focus that, in our view, has motivated going beyond the neoclassical growth model.